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Catalyst for preparing 2-ethylhexyl alcohol through gas-phase hydrogenation of octenal and preparation method

A technology of ethyl hexanol and catalyst, which is applied in the field of catalyst and preparation of octenal gas-phase hydrogenation to 2-ethyl hexanol, which can solve the problems of easy pulverization of the catalyst and increase the use strength of the catalyst, and achieve high Effects of selectivity and activity

Inactive Publication Date: 2017-01-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to develop a gas-phase hydrogenation catalyst of octenal with high activity selectivity and high liquid resistance, adding suitable additives improves the selectivity of the catalyst, and simultaneously solves the problem that the catalyst is prone to pulverization during use. Increase the use strength of the catalyst

Method used

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  • Catalyst for preparing 2-ethylhexyl alcohol through gas-phase hydrogenation of octenal and preparation method
  • Catalyst for preparing 2-ethylhexyl alcohol through gas-phase hydrogenation of octenal and preparation method

Examples

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Effect test

example 1

[0015] Put 4L of the prepared 1mol / L sodium carbonate solution into the precipitation tank with stirring, and add 55g of silica sol dropwise to the alkali solution at a temperature of 60°C, age at 65°C for 20 minutes, and take Mix 1000mL of 1 mol / copper nitrate solution, 1773mL of 1M zinc nitrate solution and 100mL of 1M aluminum nitrate solution to prepare mixed solution A, add solution A to the above solution at a uniform speed, neutralize for 30 minutes, and then age with stirring at 70°C for 30 Minutes, and then washed by concentration and washing, press-filtered to obtain a filter cake, dried, added 0.5 g of modification additives, and granulated. The dried particles were calcined at 320 ° C for 2 hours, and then pressed into tablets to obtain catalyst sample 1.

example 2

[0017] Put 4L of the prepared 1mol / sodium carbonate solution into the precipitation tank with stirring, add 80g of silica sol dropwise to the alkali solution at a temperature of 60°C, age at 65°C for 20 minutes, and take 1mol 790mL of copper nitrate solution, 1730mL of 1M zinc nitrate solution and 490mL of 1M aluminum nitrate solution were prepared as mixed solution A, and solution A was added to the above solution at a uniform speed, and the neutralization time was 30 minutes, and then stirred and aged at 70°C for 40 minutes. Afterwards, it was washed by concentrated washing method, press-filtered to obtain a filter cake, dried, added 2.5 g of modification additives, and granulated. The dried particles were calcined at 320° C. for 2 hours, and then pressed into tablets to obtain catalyst sample 2.

example 3

[0019] Put 4L of the prepared 1mol / sodium carbonate solution into the sedimentation tank with stirring, add 20g of silica sol dropwise to the alkali solution at a temperature of 60°C, and age at 65°C for 20 minutes to obtain 1M 950mL of copper nitrate solution, 1730mL of 1mol / zinc nitrate solution and 400mL of 1M aluminum nitrate solution were prepared as mixed solution A, and solution A was added to the above solution at a uniform speed, and the neutralization time was 30 minutes, and then aged at 70°C for 30 minutes, Afterwards, it was washed by concentrated washing method, press-filtered to obtain a filter cake, dried, added 1.0 g of modification additive, and granulated. The dried particles were calcined at 320°C for 2 hours, and then pressed into tablets to obtain catalyst sample 3.

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Abstract

The invention belongs to the technical field of catalysts, particularly relates to a catalyst for preparing 2-ethylhexyl alcohol through gas-phase hydrogenation of octenal, and solves the problem that the catalyst is easy to pulverize in a using process. The catalyst mainly consists of 25%-35% of copper oxide, 45%-60% of zinc oxide, 2%-10% of aluminum oxide, 2-10% of silicon dioxide and 0.01-1% of an aid. The BET specific surface area of the catalyst is 30m<2> / g-60m<2> / g, the pore volume of the catalyst is 0.17ml / g-0.30ml / g, and the average hole radius of the catalyst is 5nm-10nm. The catalyst prepared by a method disclosed by the invention has high activity and high 2-ethylhexyl alcohol selectivity, and besides, has better using strength and low color number.

Description

technical field [0001] The invention belongs to the technical field of catalysts, and in particular relates to a catalyst for gas-phase hydrogenation of octenal to produce 2-ethylhexanol and a preparation method thereof. Background technique [0002] Copper-based catalysts for the hydrogenation of octenal to 2-ethylhexanol have been reported in many patents and literature, such as Fr.Demande FR2,489,304 (1980); US4,626,604 (1986); Ger.Offen.DE4 ,127,318; Khim.Prom.st.1987, (10): 581~3; Russ.RU 2,052,446(1996); PCT Int. Appl. WO [0003] 97,00,131 etc. all reported catalysts for the hydrogenation of octenal to 2-ethylhexanol. Ger.Offen.DE4,127,318 describes the CuO-ZnO-Al 2 o 3 An appropriate amount of Mn, Mo, V, Zr and other elements and alkali metal oxides are added to the catalyst to improve the catalyst activity. Russ.RU2,052,446 introduced that adding Cr, Ni, Ca, Al and other elements to CuO-ZnO catalyst can improve the selectivity of the catalyst. PCT Int.Appl.WO97...

Claims

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Application Information

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IPC IPC(8): B01J23/80B01J23/83C07C29/141C07C31/125
Inventor 孙中华袁浩然殷玉圣孙远龙吴结华张觅张皓
Owner CHINA PETROLEUM & CHEM CORP
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